Panel



FIG. 1 is a front view of a panel as used in a partition structure;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left elevational view thereof in cross-section;

FIG. 5 is a right elevational view thereof in cross-section;

FIG. 6 is a top plan view thereof in cross-section; and,

FIG. 7 is a bottom plan thereof in cross-section.

The broken lines shown in the drawings illustrate portions of the panel that form no part of the claimed design. 

CLAIM The ornamental design for a panel, as shown and described. 